SPEEDAIRE
SPEEDAIRE 12V739 Right Angle Die Grinder Kit 0.4 hp 20,000 RPM 1/4 in NPT Female Air Inlet
Right-angle die grinder kit delivers 0.4 hp at 20,000 RPM with 1/4 in collet and NPT air inlet
- 4 hp motor delivers high-speed grinding
- 20,000 RPM maximum speed cuts material fast
- Right-angle design reaches tight spaces easily
- Kit includes five abrasive wheels and two collet wrenches
- Lock-off switch and anti-restart technology prevent accidental starts
Right Angle Die Grinder Kit
The SPEEDAIRE 12V739 is a right-angle die grinder kit rated at 0.4 hp with a maximum speed of 20,000 RPM. It features a 1/4 in NPT female air inlet and a 1/4 in collet for accessory mounting. The kit includes the bare tool, five abrasive wheels, and two collet wrenches for immediate use on steel or wood.
Sustained Operation Behaviour
A lock-off switch and anti-restart technology help prevent accidental startup during continuous pneumatic supply. The light-duty rating indicates the motor is suited for intermittent grinding, deburring, or polishing rather than prolonged heavy material removal. No anti-kickback clutch is fitted, so the operator must maintain firm control if the wheel binds.
Installation and Common Issues
Connection requires a compatible 1/4 in NPT male fitting on the air hose; mismatched threads will cause leaks or poor performance. The right-angle head allows access in tight spaces but increases the tool's length, which can limit manoeuvrability in very confined areas. Collet wrenches must be used to secure accessories properly, as hand-tightening often leads to wheel runout or ejection.
Highlights
- 4 hp motor delivers high-speed grinding
- 20,000 RPM maximum speed cuts material fast
- Right-angle design reaches tight spaces easily
- Kit includes five abrasive wheels and two collet wrenches
- Lock-off switch and anti-restart technology prevent accidental starts
Specifications
| Brand | SPEEDAIRE |
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Questions about this item
How much noise, vibration or heat does the 0.4 hp 20,000 RPM right-angle die grinder produce during extended use?
The light-duty grinder runs at 20,000 RPM with a 0.4 hp motor; expect noticeable high-speed whine and hand vibration during continuous grinding, and the aluminum housing will become warm to the touch.
What existing compressor fittings and accessories are required to connect the 1/4 in NPT female air inlet?
You need a 1/4 in NPT male hose fitting on your air hose; the kit includes two collet wrenches and five abrasive wheels, so no extra collets or wheels are required to start working.
Will the 1/4 in collet and 20,000 RPM speed work safely with older abrasive wheels and accessories I already own?
The 1/4 in collet accepts standard 1/4 in shank wheels; verify that any older wheels are rated for at least 20,000 RPM and are free of cracks before use.
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